[Webkit-unassigned] [Bug 201435] New: REGRESSION: [macOS WK2] Layout Test inspector/layers/layerTreeDidChange.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201435

            Bug ID: 201435
           Summary: REGRESSION: [macOS WK2] Layout Test
                    inspector/layers/layerTreeDidChange.html is a flaky
                    failure
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com
                CC: inspector-bugzilla-changes at group.apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com

The following layout test is flaky on macOS WK2 bots, most frequently failing in the debug configuration.

inspector/layers/layerTreeDidChange.html

Probable cause:

Unknown. The first failure on the dashboard blames https://trac.webkit.org/log/webkit/?verbose=on&rev=249133&stop_rev=249132

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=inspector%2Flayers%2FlayerTreeDidChange.html



--- /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/inspector/layers/layerTreeDidChange-expected.txt
+++ /Volumes/Data/slave/mojave-debug-tests-wk2/build/layout-test-results/inspector/layers/layerTreeDidChange-actual.txt
@@ -3,11 +3,14 @@

 == Running test suite: LayerTree.layerTreeDidChange
 -- Running test case: LayerTree.layerTreeDidChange.WithRequest
+Layer tree changed
 Creating layer...
 Layer tree changed
 Creating layer...
 Layer tree changed
-PASS: LayerTreeDidChange should fire after layersForNode is called
+FAIL: LayerTreeDidChange should fire after layersForNode is called
+    Expected: 2
+    Actual: 3

 -- Running test case: LayerTree.layerTreeDidChange.WithoutRequest
 Creating layer...

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